Rancho Cucamonga (CA)
January
Weather in Rancho Cucamonga, California for January 2027
Your guide to Rancho Cucamonga weather in January - trends and predictions
In general, the average temperature in Rancho Cucamonga at the beginning of January is 15.1 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 18.1 °C by the end of January.
The climate of Rancho Cucamonga in January is notably wet, with an average of 11 rainy days, and a total of 164.6 mm of precipitation.
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Temperatures
Rain 🌧️
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20
Dry days
11
Rainy days
0
Snow days
16°/7°
Temperatures
11 km/h
Avg max wind
47 %
Avg humidity
Rancho Cucamonga Weather January
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Temperatures trend during January in Rancho Cucamonga
See the weather trend as well as the moving average line
January weather in Rancho Cucamonga day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jan. 1 |  Partly cloudy | 17° /8° | 78.2 mm | 3 | |
| Jan. 2 |  Overcast | 18° /9° | 2.9 mm | 4 | |
| Jan. 3 |  Light rain shower | 14° /9° | 10.3 mm | 2 | |
| Jan. 4 | Overcast | 14° /7° | 30.3 mm | 3 | |
| Jan. 5 | Partly cloudy | 15° /7° | 11.1 mm | 3 | |
| Jan. 6 |  Sunny | 16° /6° | 0 mm | 3 | |
| Jan. 7 | Patchy rain possible | 12° /5° | 0.6 mm | 2 | |
| Jan. 8 |  Cloudy | 13° /4° | 0.1 mm | 3 | |
| Jan. 9 | Sunny | 16° /5° | 0 mm | 4 | |
| Jan. 10 | Sunny | 16° /4° | 0 mm | 3 | |
| Jan. 11 | Sunny | 17° /4° | 0 mm | 3 | |
| Jan. 12 | Sunny | 17° /5° | 0 mm | 4 | |
| Jan. 13 | Sunny | 17° /6° | 0 mm | 3 | |
| Jan. 14 | Sunny | 18° /7° | 0 mm | 4 | |
| Jan. 15 | Sunny | 19° /8° | 0 mm | 3 | |
| Jan. 16 | Sunny | 21° /8° | 0 mm | 4 | |
| Jan. 17 | Partly cloudy | 16° /7° | 0 mm | 3 | |
| Jan. 18 | Sunny | 18° /5° | 0 mm | 5 | |
| Jan. 19 | Sunny | 20° /8° | 0 mm | 3 | |
| Jan. 20 | Sunny | 18° /8° | 1.5 mm | 3 | |
| Jan. 21 | Light rain shower | 14° /8° | 4 mm | 2 | |
| Jan. 22 | Light rain shower | 15° /8° | 9.3 mm | 3 | |
| Jan. 23 | Patchy rain possible | 16° /8° | 0 mm | 3 | |
| Jan. 24 | Overcast | 17° /6° | 1.6 mm | 4 | |
| Jan. 25 | Overcast | 15° /6° | 0 mm | 3 | |
| Jan. 26 | Sunny | 15° /6° | 7.2 mm | 3 | |
| Jan. 27 | Sunny | 18° /7° | 7.4 mm | 3 | |
| Jan. 28 | Overcast | 18° /7° | 0 mm | 3 | |
| Jan. 29 | Overcast | 20° /7° | 0 mm | 3 | |
| Jan. 30 | Overcast | 20° /9° | 0 mm | 3 | |
| Jan. 31 | Partly cloudy | 21° /9° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Rancho Cucamonga in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Rancho Cucamonga forecast closer to your planned date for the most up-to-date weather information.
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Rancho Cucamonga in January - FAQ
What are the expected maximum and minimum temperatures in Rancho Cucamonga during January?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Rancho Cucamonga during January?
Significant rainfall exceeding 164.6 mm is expected in Rancho Cucamonga during January, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Rancho Cucamonga during January?
The average wind speed in Rancho Cucamonga during January is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
January rainfall patterns in Rancho Cucamonga
Explore the daily rainfall trends and prepare for Rancho Cucamongas January weather 💧
Typically, Rancho Cucamonga has 11 rainy days in January with a total of 164.6 mm of rainfall.
UV exposure in Rancho Cucamonga during January
Stay informed about UV levels for safe outdoor activities throughout the month of January ☀️
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Where is Rancho Cucamonga?Get accurate weather forecasts for Rancho Cucamonga, located at latitude 34.106 and longitude -117.593. Stay updated with localized weather information tailored for Rancho Cucamonga.
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